Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10576313 | Detachable connector | Kenichi Ono, Osamu Zaitsu | 2020-03-03 |
| 8671943 | Breathing apparatus | Hiroyuki Ide | 2014-03-18 |
| 7086400 | Mask | Kenichi Ono, Shuichiro Shimada | 2006-08-08 |
| 5829433 | Inhalation valve | Kenichi Ono, Tsutomu Watabe | 1998-11-03 |
| 4991577 | Exhalation valve means of a respiration mask | — | 1991-02-12 |
| 4892094 | Pressure responsive diaphragm valve | — | 1990-01-09 |
| 4748695 | Face shield assembly | Yoshiaki Haino | 1988-06-07 |
| 4501272 | Mask | Kaisaburo Shigematsu, Yukio Okubo | 1985-02-26 |